//Viral Science www.youtube.com/c/viralscience  www.viralsciencecreativity.com
//ESP32 Camera Surveillance Car

#include "esp_camera.h"
#include <WiFi.h>

//
// WARNING!!! Make sure that you have either selected ESP32 Wrover Module,
//            or another board which has PSRAM enabled
//
// Adafruit ESP32 Feather

const char *ssid = "rn9";          //Enter SSID WIFI Name
const char *password = "88888888"; //Enter WIFI Password
String WiFiAddr = "";

// AI Thinker Cam 设置
#define PWDN_GPIO_NUM 32
#define RESET_GPIO_NUM -1
#define XCLK_GPIO_NUM 0
#define SIOD_GPIO_NUM 26
#define SIOC_GPIO_NUM 27

#define Y9_GPIO_NUM 35
#define Y8_GPIO_NUM 34
#define Y7_GPIO_NUM 39
#define Y6_GPIO_NUM 36
#define Y5_GPIO_NUM 21
#define Y4_GPIO_NUM 19
#define Y3_GPIO_NUM 18
#define Y2_GPIO_NUM 5
#define VSYNC_GPIO_NUM 25
#define HREF_GPIO_NUM 23
#define PCLK_GPIO_NUM 22

// 引脚口
int LEDIO = 4;
int RED_WIRE_IO = 13;

#define PRINT_DELAY 350

void startCameraServer();
void startWebServer();

void setup()
{
  Serial.begin(115200);
  Serial.setDebugOutput(true);
  Serial.println();

  pinMode(LEDIO, OUTPUT);
  pinMode(RED_WIRE_IO, INPUT);

  digitalWrite(LEDIO, LOW);

  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer = LEDC_TIMER_0;
  config.pin_d0 = Y2_GPIO_NUM;
  config.pin_d1 = Y3_GPIO_NUM;
  config.pin_d2 = Y4_GPIO_NUM;
  config.pin_d3 = Y5_GPIO_NUM;
  config.pin_d4 = Y6_GPIO_NUM;
  config.pin_d5 = Y7_GPIO_NUM;
  config.pin_d6 = Y8_GPIO_NUM;
  config.pin_d7 = Y9_GPIO_NUM;
  config.pin_xclk = XCLK_GPIO_NUM;
  config.pin_pclk = PCLK_GPIO_NUM;
  config.pin_vsync = VSYNC_GPIO_NUM;
  config.pin_href = HREF_GPIO_NUM;
  config.pin_sscb_sda = SIOD_GPIO_NUM;
  config.pin_sscb_scl = SIOC_GPIO_NUM;
  config.pin_pwdn = PWDN_GPIO_NUM;
  config.pin_reset = RESET_GPIO_NUM;
  config.xclk_freq_hz = 20000000;
  config.pixel_format = PIXFORMAT_JPEG;
  //init with high specs to pre-allocate larger buffers
  if (psramFound())
  {
    config.frame_size = FRAMESIZE_UXGA;
    config.jpeg_quality = 10;
    config.fb_count = 2;
  }
  else
  {
    config.frame_size = FRAMESIZE_SVGA;
    config.jpeg_quality = 12;
    config.fb_count = 1;
  }

  // camera init
  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK)
  {
    Serial.printf("Camera init failed with error 0x%x", err);
    return;
  }

  //drop down frame size for higher initial frame rate
  sensor_t *s = esp_camera_sensor_get();
  s->set_framesize(s, FRAMESIZE_CIF);

  WiFi.mode(WIFI_STA);
  WiFi.setSleep(false);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED)
  {
    delay(500);
    Serial.println(".");
  }
  Serial.println("WiFi connected!");

  startCameraServer();
  startWebServer();

  WiFiAddr = WiFi.localIP().toString();
  Serial.println("Ready!Use http://" + WiFiAddr + "/ to connect");
}

void loop()
{
  if (digitalRead(RED_WIRE_IO) == 0)
  {
    Serial.println("Obstacles");
    delay(PRINT_DELAY);
  }
}